The minimum value of `9^x+9^(1-x),x inR,` isA. 2B. 3C. 4D. none of the

1.	The minimum value of `9^x+9^(1-x),x inR,` isA. 2B. 3C. 4D. none of these.
Answer» Correct Answer - D Using `A.M.geG.M.,` we have `(9x+9^(1-x))/(2)gesqrt(9^(x)xx9^(1-x))implies9^(x)+9^(1-x)ge6` Hence, the least value of `9^(x)+9^(1-x)` is 6.

Discussion

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